EP2586825A1 - Composition de polypropylène mou à flux élevé - Google Patents
Composition de polypropylène mou à flux élevé Download PDFInfo
- Publication number
- EP2586825A1 EP2586825A1 EP11187032.5A EP11187032A EP2586825A1 EP 2586825 A1 EP2586825 A1 EP 2586825A1 EP 11187032 A EP11187032 A EP 11187032A EP 2586825 A1 EP2586825 A1 EP 2586825A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- propylene copolymer
- raheco
- polypropylene composition
- range
- fraction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- -1 polypropylene Polymers 0.000 title claims abstract description 102
- 239000004743 Polypropylene Substances 0.000 title claims abstract description 82
- 239000000203 mixture Substances 0.000 title claims abstract description 62
- 229920001155 polypropylene Polymers 0.000 title claims abstract description 49
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 claims abstract description 299
- 229920001577 copolymer Polymers 0.000 claims abstract description 281
- 229920001296 polysiloxane Polymers 0.000 claims abstract description 37
- 229920000034 Plastomer Polymers 0.000 claims abstract description 27
- 239000008096 xylene Substances 0.000 claims abstract description 24
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims abstract description 23
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 31
- 239000005977 Ethylene Substances 0.000 claims description 31
- 239000003795 chemical substances by application Substances 0.000 claims description 26
- 239000012748 slip agent Substances 0.000 claims description 25
- 238000000034 method Methods 0.000 claims description 22
- 239000000155 melt Substances 0.000 claims description 17
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 16
- 239000004711 α-olefin Substances 0.000 claims description 16
- 229920010126 Linear Low Density Polyethylene (LLDPE) Polymers 0.000 claims description 9
- 238000002360 preparation method Methods 0.000 claims description 9
- 239000000377 silicon dioxide Substances 0.000 claims description 8
- NNBZCPXTIHJBJL-UHFFFAOYSA-N decalin Chemical compound C1CCCC2CCCCC21 NNBZCPXTIHJBJL-UHFFFAOYSA-N 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 150000002978 peroxides Chemical class 0.000 claims description 5
- 235000012239 silicon dioxide Nutrition 0.000 claims description 5
- PXXNTAGJWPJAGM-UHFFFAOYSA-N vertaline Natural products C1C2C=3C=C(OC)C(OC)=CC=3OC(C=C3)=CC=C3CCC(=O)OC1CC1N2CCCC1 PXXNTAGJWPJAGM-UHFFFAOYSA-N 0.000 claims description 4
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 2
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 2
- 239000000194 fatty acid Substances 0.000 claims description 2
- 229930195729 fatty acid Natural products 0.000 claims description 2
- 150000004665 fatty acids Chemical class 0.000 claims description 2
- 230000008018 melting Effects 0.000 claims description 2
- 238000002844 melting Methods 0.000 claims description 2
- 230000000593 degrading effect Effects 0.000 claims 1
- 238000000113 differential scanning calorimetry Methods 0.000 claims 1
- 239000003054 catalyst Substances 0.000 description 39
- 239000012071 phase Substances 0.000 description 39
- 239000011777 magnesium Substances 0.000 description 36
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 33
- 235000001055 magnesium Nutrition 0.000 description 27
- 229910052751 metal Inorganic materials 0.000 description 27
- 239000002184 metal Substances 0.000 description 27
- 229910052749 magnesium Inorganic materials 0.000 description 25
- 239000011159 matrix material Substances 0.000 description 24
- 238000006116 polymerization reaction Methods 0.000 description 24
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 22
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical compound CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 description 20
- 239000000839 emulsion Substances 0.000 description 20
- 239000002245 particle Substances 0.000 description 20
- 229920000642 polymer Polymers 0.000 description 18
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical group [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 17
- LIKMAJRDDDTEIG-UHFFFAOYSA-N 1-hexene Chemical compound CCCCC=C LIKMAJRDDDTEIG-UHFFFAOYSA-N 0.000 description 14
- 150000001875 compounds Chemical class 0.000 description 14
- 239000007789 gas Substances 0.000 description 13
- 239000000243 solution Substances 0.000 description 13
- 125000004432 carbon atom Chemical group C* 0.000 description 12
- 238000006243 chemical reaction Methods 0.000 description 12
- 238000005406 washing Methods 0.000 description 12
- 239000007788 liquid Substances 0.000 description 10
- 239000012429 reaction media Substances 0.000 description 10
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 9
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 description 9
- 229920006294 polydialkylsiloxane Polymers 0.000 description 9
- 239000002002 slurry Substances 0.000 description 9
- 239000000178 monomer Substances 0.000 description 8
- 239000003921 oil Substances 0.000 description 8
- 239000007795 chemical reaction product Substances 0.000 description 7
- 239000000047 product Substances 0.000 description 7
- 239000011541 reaction mixture Substances 0.000 description 7
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 6
- OFBQJSOFQDEBGM-UHFFFAOYSA-N Pentane Chemical compound CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 6
- 125000003118 aryl group Chemical group 0.000 description 6
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 6
- 239000003381 stabilizer Substances 0.000 description 6
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 description 5
- 150000001298 alcohols Chemical class 0.000 description 5
- 125000005234 alkyl aluminium group Chemical group 0.000 description 5
- 239000004411 aluminium Substances 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 5
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 5
- 238000004364 calculation method Methods 0.000 description 5
- JWCYDYZLEAQGJJ-UHFFFAOYSA-N dicyclopentyl(dimethoxy)silane Chemical compound C1CCCC1[Si](OC)(OC)C1CCCC1 JWCYDYZLEAQGJJ-UHFFFAOYSA-N 0.000 description 5
- 229920001198 elastomeric copolymer Polymers 0.000 description 5
- 150000002736 metal compounds Chemical class 0.000 description 5
- 238000002156 mixing Methods 0.000 description 5
- 239000002243 precursor Substances 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 239000010936 titanium Substances 0.000 description 5
- 229910052719 titanium Inorganic materials 0.000 description 5
- XJDNKRIXUMDJCW-UHFFFAOYSA-J titanium tetrachloride Chemical compound Cl[Ti](Cl)(Cl)Cl XJDNKRIXUMDJCW-UHFFFAOYSA-J 0.000 description 5
- KBPLFHHGFOOTCA-UHFFFAOYSA-N 1-Octanol Chemical compound CCCCCCCCO KBPLFHHGFOOTCA-UHFFFAOYSA-N 0.000 description 4
- KWKAKUADMBZCLK-UHFFFAOYSA-N 1-octene Chemical compound CCCCCCC=C KWKAKUADMBZCLK-UHFFFAOYSA-N 0.000 description 4
- 102100031174 C-C chemokine receptor type 10 Human genes 0.000 description 4
- 102100021198 Chemerin-like receptor 2 Human genes 0.000 description 4
- 101000777558 Homo sapiens C-C chemokine receptor type 10 Proteins 0.000 description 4
- 101000750094 Homo sapiens Chemerin-like receptor 2 Proteins 0.000 description 4
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 4
- AMQJEAYHLZJPGS-UHFFFAOYSA-N N-Pentanol Chemical compound CCCCCO AMQJEAYHLZJPGS-UHFFFAOYSA-N 0.000 description 4
- 229910003074 TiCl4 Inorganic materials 0.000 description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 4
- 125000000217 alkyl group Chemical group 0.000 description 4
- SJJCABYOVIHNPZ-UHFFFAOYSA-N cyclohexyl-dimethoxy-methylsilane Chemical compound CO[Si](C)(OC)C1CCCCC1 SJJCABYOVIHNPZ-UHFFFAOYSA-N 0.000 description 4
- 150000002148 esters Chemical class 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- PHTQWCKDNZKARW-UHFFFAOYSA-N isoamylol Chemical compound CC(C)CCO PHTQWCKDNZKARW-UHFFFAOYSA-N 0.000 description 4
- 150000002681 magnesium compounds Chemical class 0.000 description 4
- 229920001384 propylene homopolymer Polymers 0.000 description 4
- 150000004670 unsaturated fatty acids Chemical class 0.000 description 4
- 235000021122 unsaturated fatty acids Nutrition 0.000 description 4
- VFWCMGCRMGJXDK-UHFFFAOYSA-N 1-chlorobutane Chemical compound CCCCCl VFWCMGCRMGJXDK-UHFFFAOYSA-N 0.000 description 3
- DMWVYCCGCQPJEA-UHFFFAOYSA-N 2,5-bis(tert-butylperoxy)-2,5-dimethylhexane Chemical compound CC(C)(C)OOC(C)(C)CCC(C)(C)OOC(C)(C)C DMWVYCCGCQPJEA-UHFFFAOYSA-N 0.000 description 3
- BIISIZOQPWZPPS-UHFFFAOYSA-N 2-tert-butylperoxypropan-2-ylbenzene Chemical compound CC(C)(C)OOC(C)(C)C1=CC=CC=C1 BIISIZOQPWZPPS-UHFFFAOYSA-N 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 3
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- 238000005033 Fourier transform infrared spectroscopy Methods 0.000 description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- 239000004594 Masterbatch (MB) Substances 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 3
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- 239000000654 additive Substances 0.000 description 3
- 238000013019 agitation Methods 0.000 description 3
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 description 3
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 3
- LSXWFXONGKSEMY-UHFFFAOYSA-N di-tert-butyl peroxide Chemical compound CC(C)(C)OOC(C)(C)C LSXWFXONGKSEMY-UHFFFAOYSA-N 0.000 description 3
- YNLAOSYQHBDIKW-UHFFFAOYSA-M diethylaluminium chloride Chemical compound CC[Al](Cl)CC YNLAOSYQHBDIKW-UHFFFAOYSA-M 0.000 description 3
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 3
- VHPUZTHRFWIGAW-UHFFFAOYSA-N dimethoxy-di(propan-2-yl)silane Chemical compound CO[Si](OC)(C(C)C)C(C)C VHPUZTHRFWIGAW-UHFFFAOYSA-N 0.000 description 3
- 239000004205 dimethyl polysiloxane Substances 0.000 description 3
- 229910052736 halogen Inorganic materials 0.000 description 3
- 150000002367 halogens Chemical class 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 238000011065 in-situ storage Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 3
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 230000000379 polymerizing effect Effects 0.000 description 3
- 229920000098 polyolefin Polymers 0.000 description 3
- 238000007711 solidification Methods 0.000 description 3
- 230000008023 solidification Effects 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- VOITXYVAKOUIBA-UHFFFAOYSA-N triethylaluminium Chemical compound CC[Al](CC)CC VOITXYVAKOUIBA-UHFFFAOYSA-N 0.000 description 3
- PUPZLCDOIYMWBV-UHFFFAOYSA-N (+/-)-1,3-Butanediol Chemical compound CC(O)CCO PUPZLCDOIYMWBV-UHFFFAOYSA-N 0.000 description 2
- NMRPBPVERJPACX-UHFFFAOYSA-N (3S)-octan-3-ol Natural products CCCCCC(O)CC NMRPBPVERJPACX-UHFFFAOYSA-N 0.000 description 2
- BBMCTIGTTCKYKF-UHFFFAOYSA-N 1-heptanol Chemical compound CCCCCCCO BBMCTIGTTCKYKF-UHFFFAOYSA-N 0.000 description 2
- WOFPPJOZXUTRAU-UHFFFAOYSA-N 2-Ethyl-1-hexanol Natural products CCCCC(O)CCC WOFPPJOZXUTRAU-UHFFFAOYSA-N 0.000 description 2
- YIWUKEYIRIRTPP-UHFFFAOYSA-N 2-ethylhexan-1-ol Chemical compound CCCCC(CC)CO YIWUKEYIRIRTPP-UHFFFAOYSA-N 0.000 description 2
- CETWDUZRCINIHU-UHFFFAOYSA-N 2-heptanol Chemical compound CCCCCC(C)O CETWDUZRCINIHU-UHFFFAOYSA-N 0.000 description 2
- YVBCULSIZWMTFY-UHFFFAOYSA-N 4-Heptanol Natural products CCCC(O)CCC YVBCULSIZWMTFY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 2
- MQIUGAXCHLFZKX-UHFFFAOYSA-N Di-n-octyl phthalate Natural products CCCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCC MQIUGAXCHLFZKX-UHFFFAOYSA-N 0.000 description 2
- UAUDZVJPLUQNMU-UHFFFAOYSA-N Erucasaeureamid Natural products CCCCCCCCC=CCCCCCCCCCCCC(N)=O UAUDZVJPLUQNMU-UHFFFAOYSA-N 0.000 description 2
- 229920000181 Ethylene propylene rubber Polymers 0.000 description 2
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 150000001336 alkenes Chemical class 0.000 description 2
- 125000003545 alkoxy group Chemical group 0.000 description 2
- 150000001399 aluminium compounds Chemical class 0.000 description 2
- 238000004630 atomic force microscopy Methods 0.000 description 2
- 150000001555 benzenes Chemical class 0.000 description 2
- 150000008280 chlorinated hydrocarbons Chemical class 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 229960001701 chloroform Drugs 0.000 description 2
- NEHMKBQYUWJMIP-UHFFFAOYSA-N chloromethane Chemical compound ClC NEHMKBQYUWJMIP-UHFFFAOYSA-N 0.000 description 2
- 125000000753 cycloalkyl group Chemical group 0.000 description 2
- MWKFXSUHUHTGQN-UHFFFAOYSA-N decan-1-ol Chemical compound CCCCCCCCCCO MWKFXSUHUHTGQN-UHFFFAOYSA-N 0.000 description 2
- 150000004796 dialkyl magnesium compounds Chemical class 0.000 description 2
- 150000005690 diesters Chemical class 0.000 description 2
- 150000002009 diols Chemical class 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 238000001493 electron microscopy Methods 0.000 description 2
- UAUDZVJPLUQNMU-KTKRTIGZSA-N erucamide Chemical compound CCCCCCCC\C=C/CCCCCCCCCCCC(N)=O UAUDZVJPLUQNMU-KTKRTIGZSA-N 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 150000004820 halides Chemical class 0.000 description 2
- 150000008282 halocarbons Chemical class 0.000 description 2
- ZSIAUFGUXNUGDI-UHFFFAOYSA-N hexan-1-ol Chemical compound CCCCCCO ZSIAUFGUXNUGDI-UHFFFAOYSA-N 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- ZXEKIIBDNHEJCQ-UHFFFAOYSA-N isobutanol Chemical compound CC(C)CO ZXEKIIBDNHEJCQ-UHFFFAOYSA-N 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- 229920002521 macromolecule Polymers 0.000 description 2
- KXDANLFHGCWFRQ-UHFFFAOYSA-N magnesium;butane;octane Chemical compound [Mg+2].CCC[CH2-].CCCCCCC[CH2-] KXDANLFHGCWFRQ-UHFFFAOYSA-N 0.000 description 2
- 125000005395 methacrylic acid group Chemical group 0.000 description 2
- 238000000386 microscopy Methods 0.000 description 2
- TVMXDCGIABBOFY-UHFFFAOYSA-N n-Octanol Natural products CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 2
- ZWRUINPWMLAQRD-UHFFFAOYSA-N nonan-1-ol Chemical compound CCCCCCCCCO ZWRUINPWMLAQRD-UHFFFAOYSA-N 0.000 description 2
- SJWFXCIHNDVPSH-UHFFFAOYSA-N octan-2-ol Chemical compound CCCCCCC(C)O SJWFXCIHNDVPSH-UHFFFAOYSA-N 0.000 description 2
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 2
- AQIXEPGDORPWBJ-UHFFFAOYSA-N pentan-3-ol Chemical compound CCC(O)CC AQIXEPGDORPWBJ-UHFFFAOYSA-N 0.000 description 2
- IVDFJHOHABJVEH-UHFFFAOYSA-N pinacol Chemical compound CC(C)(O)C(C)(C)O IVDFJHOHABJVEH-UHFFFAOYSA-N 0.000 description 2
- 239000002574 poison Substances 0.000 description 2
- 231100000614 poison Toxicity 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 2
- YPFDHNVEDLHUCE-UHFFFAOYSA-N propane-1,3-diol Chemical compound OCCCO YPFDHNVEDLHUCE-UHFFFAOYSA-N 0.000 description 2
- 238000011002 quantification Methods 0.000 description 2
- 238000006748 scratching Methods 0.000 description 2
- 230000002393 scratching effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 150000005846 sugar alcohols Polymers 0.000 description 2
- NBRKLOOSMBRFMH-UHFFFAOYSA-N tert-butyl chloride Chemical compound CC(C)(C)Cl NBRKLOOSMBRFMH-UHFFFAOYSA-N 0.000 description 2
- 229910052723 transition metal Inorganic materials 0.000 description 2
- 150000003624 transition metals Chemical class 0.000 description 2
- 125000000008 (C1-C10) alkyl group Chemical group 0.000 description 1
- 125000003837 (C1-C20) alkyl group Chemical group 0.000 description 1
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- HLZKNKRTKFSKGZ-UHFFFAOYSA-N 1-Tetradecanol Natural products CCCCCCCCCCCCCCO HLZKNKRTKFSKGZ-UHFFFAOYSA-N 0.000 description 1
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- BAYAKMPRFGNNFW-UHFFFAOYSA-N 2,4-dimethylpentan-3-ol Chemical compound CC(C)C(O)C(C)C BAYAKMPRFGNNFW-UHFFFAOYSA-N 0.000 description 1
- ODBCKCWTWALFKM-UHFFFAOYSA-N 2,5-bis(tert-butylperoxy)-2,5-dimethylhex-3-yne Chemical compound CC(C)(C)OOC(C)(C)C#CC(C)(C)OOC(C)(C)C ODBCKCWTWALFKM-UHFFFAOYSA-N 0.000 description 1
- JJZZVQICFJITMO-UHFFFAOYSA-N 2,7-dimethyloctan-2-ol Chemical compound CC(C)CCCCC(C)(C)O JJZZVQICFJITMO-UHFFFAOYSA-N 0.000 description 1
- PSXUKPCAIKETHF-UHFFFAOYSA-N 2-[4-[3-[4-(4,5-dihydro-1h-imidazol-2-yl)phenoxy]propoxy]phenyl]-4,5-dihydro-1h-imidazole Chemical compound C=1C=C(C=2NCCN=2)C=CC=1OCCCOC(C=C1)=CC=C1C1=NCCN1 PSXUKPCAIKETHF-UHFFFAOYSA-N 0.000 description 1
- BSPCSKHALVHRSR-UHFFFAOYSA-N 2-chlorobutane Chemical compound CCC(C)Cl BSPCSKHALVHRSR-UHFFFAOYSA-N 0.000 description 1
- TZYRSLHNPKPEFV-UHFFFAOYSA-N 2-ethyl-1-butanol Chemical compound CCC(CC)CO TZYRSLHNPKPEFV-UHFFFAOYSA-N 0.000 description 1
- MSXVEPNJUHWQHW-UHFFFAOYSA-N 2-methylbutan-2-ol Chemical compound CCC(C)(C)O MSXVEPNJUHWQHW-UHFFFAOYSA-N 0.000 description 1
- WVYWICLMDOOCFB-UHFFFAOYSA-N 4-methyl-2-pentanol Chemical compound CC(C)CC(C)O WVYWICLMDOOCFB-UHFFFAOYSA-N 0.000 description 1
- DMVNHJNKGGFAEB-UHFFFAOYSA-N CCCCC[Mg]CCCC Chemical compound CCCCC[Mg]CCCC DMVNHJNKGGFAEB-UHFFFAOYSA-N 0.000 description 1
- UNCRKDFOOFDWDK-UHFFFAOYSA-N CCCCC[Mg]CCCCC Chemical compound CCCCC[Mg]CCCCC UNCRKDFOOFDWDK-UHFFFAOYSA-N 0.000 description 1
- MVECFARLYQAUNR-UHFFFAOYSA-N CCCC[Mg]CC Chemical compound CCCC[Mg]CC MVECFARLYQAUNR-UHFFFAOYSA-N 0.000 description 1
- IWCXHHNYQNVTHS-UHFFFAOYSA-N CCCC[Mg]CCC Chemical compound CCCC[Mg]CCC IWCXHHNYQNVTHS-UHFFFAOYSA-N 0.000 description 1
- ABXKXVWOKXSBNR-UHFFFAOYSA-N CCC[Mg]CCC Chemical compound CCC[Mg]CCC ABXKXVWOKXSBNR-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- PXXNTAGJWPJAGM-VCOUNFBDSA-N Decaline Chemical compound C=1([C@@H]2C3)C=C(OC)C(OC)=CC=1OC(C=C1)=CC=C1CCC(=O)O[C@H]3C[C@H]1N2CCCC1 PXXNTAGJWPJAGM-VCOUNFBDSA-N 0.000 description 1
- HXQPUEQDBSPXTE-UHFFFAOYSA-N Diisobutylcarbinol Chemical compound CC(C)CC(O)CC(C)C HXQPUEQDBSPXTE-UHFFFAOYSA-N 0.000 description 1
- 102100029579 Diphosphoinositol polyphosphate phosphohydrolase 1 Human genes 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- 238000005481 NMR spectroscopy Methods 0.000 description 1
- ALQSHHUCVQOPAS-UHFFFAOYSA-N Pentane-1,5-diol Chemical compound OCCCCCO ALQSHHUCVQOPAS-UHFFFAOYSA-N 0.000 description 1
- DKGAVHZHDRPRBM-UHFFFAOYSA-N Tert-Butanol Chemical compound CC(C)(C)O DKGAVHZHDRPRBM-UHFFFAOYSA-N 0.000 description 1
- 239000011954 Ziegler–Natta catalyst Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 150000004791 alkyl magnesium halides Chemical class 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium chloride Substances Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 1
- 229940077746 antacid containing aluminium compound Drugs 0.000 description 1
- FYXKZNLBZKRYSS-UHFFFAOYSA-N benzene-1,2-dicarbonyl chloride Chemical compound ClC(=O)C1=CC=CC=C1C(Cl)=O FYXKZNLBZKRYSS-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- BTANRVKWQNVYAZ-UHFFFAOYSA-N butan-2-ol Chemical compound CCC(C)O BTANRVKWQNVYAZ-UHFFFAOYSA-N 0.000 description 1
- BMRWNKZVCUKKSR-UHFFFAOYSA-N butane-1,2-diol Chemical compound CCC(O)CO BMRWNKZVCUKKSR-UHFFFAOYSA-N 0.000 description 1
- 235000019437 butane-1,3-diol Nutrition 0.000 description 1
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 1
- OWBTYPJTUOEWEK-UHFFFAOYSA-N butane-2,3-diol Chemical compound CC(O)C(C)O OWBTYPJTUOEWEK-UHFFFAOYSA-N 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229950005499 carbon tetrachloride Drugs 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 150000001733 carboxylic acid esters Chemical class 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- HRYZWHHZPQKTII-UHFFFAOYSA-N chloroethane Chemical compound CCCl HRYZWHHZPQKTII-UHFFFAOYSA-N 0.000 description 1
- 239000003426 co-catalyst Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 150000004696 coordination complex Chemical class 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 125000000582 cycloheptyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 1
- 125000001511 cyclopentyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 150000001990 dicarboxylic acid derivatives Chemical class 0.000 description 1
- NHYFIJRXGOQNFS-UHFFFAOYSA-N dimethoxy-bis(2-methylpropyl)silane Chemical compound CC(C)C[Si](OC)(CC(C)C)OC NHYFIJRXGOQNFS-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 description 1
- 229920001038 ethylene copolymer Polymers 0.000 description 1
- 125000000816 ethylene group Chemical group [H]C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000005227 gel permeation chromatography Methods 0.000 description 1
- 229940052308 general anesthetics halogenated hydrocarbons Drugs 0.000 description 1
- 230000026030 halogenation Effects 0.000 description 1
- 238000005658 halogenation reaction Methods 0.000 description 1
- VHHHONWQHHHLTI-UHFFFAOYSA-N hexachloroethane Chemical compound ClC(Cl)(Cl)C(Cl)(Cl)Cl VHHHONWQHHHLTI-UHFFFAOYSA-N 0.000 description 1
- BXWNKGSJHAJOGX-UHFFFAOYSA-N hexadecan-1-ol Chemical compound CCCCCCCCCCCCCCCCO BXWNKGSJHAJOGX-UHFFFAOYSA-N 0.000 description 1
- XXMIOPMDWAUFGU-UHFFFAOYSA-N hexane-1,6-diol Chemical compound OCCCCCCO XXMIOPMDWAUFGU-UHFFFAOYSA-N 0.000 description 1
- 125000001183 hydrocarbyl group Chemical group 0.000 description 1
- 239000012442 inert solvent Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- QTBFPMKWQKYFLR-UHFFFAOYSA-N isobutyl chloride Chemical compound CC(C)CCl QTBFPMKWQKYFLR-UHFFFAOYSA-N 0.000 description 1
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 1
- 125000001972 isopentyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])C([H])([H])* 0.000 description 1
- 229960004592 isopropanol Drugs 0.000 description 1
- ULYZAYCEDJDHCC-UHFFFAOYSA-N isopropyl chloride Chemical compound CC(C)Cl ULYZAYCEDJDHCC-UHFFFAOYSA-N 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 101710153356 mRNA-decapping protein g5R Proteins 0.000 description 1
- 235000011147 magnesium chloride Nutrition 0.000 description 1
- 229910001629 magnesium chloride Inorganic materials 0.000 description 1
- KJJBSBKRXUVBMX-UHFFFAOYSA-N magnesium;butane Chemical compound [Mg+2].CCC[CH2-].CCC[CH2-] KJJBSBKRXUVBMX-UHFFFAOYSA-N 0.000 description 1
- KMYFNYFIPIGQQZ-UHFFFAOYSA-N magnesium;octane Chemical compound [Mg+2].CCCCCCC[CH2-].CCCCCCC[CH2-] KMYFNYFIPIGQQZ-UHFFFAOYSA-N 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- JYVLIDXNZAXMDK-UHFFFAOYSA-N methyl propyl carbinol Natural products CCCC(C)O JYVLIDXNZAXMDK-UHFFFAOYSA-N 0.000 description 1
- KOFGHHIZTRGVAF-UHFFFAOYSA-N n-ethyl-n-triethoxysilylethanamine Chemical group CCO[Si](OCC)(OCC)N(CC)CC KOFGHHIZTRGVAF-UHFFFAOYSA-N 0.000 description 1
- SNMVRZFUUCLYTO-UHFFFAOYSA-N n-propyl chloride Chemical compound CCCCl SNMVRZFUUCLYTO-UHFFFAOYSA-N 0.000 description 1
- 125000001971 neopentyl group Chemical group [H]C([*])([H])C(C([H])([H])[H])(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- FCBBRODPXVPZAH-UHFFFAOYSA-N nonan-5-ol Chemical compound CCCCC(O)CCCC FCBBRODPXVPZAH-UHFFFAOYSA-N 0.000 description 1
- 230000006911 nucleation Effects 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- GLDOVTGHNKAZLK-UHFFFAOYSA-N octadecan-1-ol Chemical compound CCCCCCCCCCCCCCCCCCO GLDOVTGHNKAZLK-UHFFFAOYSA-N 0.000 description 1
- OEIJHBUUFURJLI-UHFFFAOYSA-N octane-1,8-diol Chemical compound OCCCCCCCCO OEIJHBUUFURJLI-UHFFFAOYSA-N 0.000 description 1
- 125000002347 octyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- BNIXVQGCZULYKV-UHFFFAOYSA-N pentachloroethane Chemical compound ClC(Cl)C(Cl)(Cl)Cl BNIXVQGCZULYKV-UHFFFAOYSA-N 0.000 description 1
- REIUXOLGHVXAEO-UHFFFAOYSA-N pentadecan-1-ol Chemical compound CCCCCCCCCCCCCCCO REIUXOLGHVXAEO-UHFFFAOYSA-N 0.000 description 1
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 description 1
- 238000013001 point bending Methods 0.000 description 1
- 239000002685 polymerization catalyst Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 150000004756 silanes Chemical class 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- 239000011949 solid catalyst Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 238000005809 transesterification reaction Methods 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
- 150000004072 triols Chemical class 0.000 description 1
- 150000003738 xylenes Chemical class 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/14—Copolymers of propene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F210/00—Copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
- C08F210/04—Monomers containing three or four carbon atoms
- C08F210/06—Propene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0807—Copolymers of ethene with unsaturated hydrocarbons only containing more than three carbon atoms
- C08L23/0815—Copolymers of ethene with aliphatic 1-olefins
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
- C08L83/04—Polysiloxanes
Definitions
- the present invention is directed to a new soft polypropylene composition with high flow and articles made therefrom.
- Polymers are increasingly used in different demanding applications. At the same time there is a continuous seek for tailored compositions which meet the requirements of these applications.
- the demands can be challenging, since many polymer properties are directly or indirectly interrelated. For instance in the field of packaging soft materials having high scratch resistance are required.
- Heterophasic systems are known for its good impact behavior.
- Heterophasic propylene copolymers are well known in the art.
- Such heterophasic propylene copolymers comprise a matrix being either a propylene homopolymer or a random propylene copolymer in which an elastomeric copolymer is dispersed.
- the polypropylene matrix contains (finely) dispersed inclusions being not part of the matrix and said inclusions contain the elastomeric copolymer.
- inclusion indicates that the matrix and the inclusion form different phases within the heterophasic propylene copolymer, said inclusions are for instance visible by high resolution microscopy, like electron microscopy or scanning force microscopy.
- the finding of the present invention is to provide composition with high melt flow, said composition comprises a heterophasic propylene copolymer, a plastomer and a polysiloxane, said heterophasic propylene copolymer comprises as the matrix a random propylene copolymer in which an elastomeric propylene copolymer is dispersed, the heterophasic propylene copolymer is further featured by rather high overall comonomer content and a rather high comonomer content in the xylene cold soluble (XCS) fraction.
- XCS xylene cold soluble
- the present invention is directed to a polypropylene composition having a melt flow rate MFR 2 (230 °C) measured according to ISO 1133 of at least 40 g/10min, said composition comprises
- the instant polypropylene composition comprises
- the instant polypropylene composition is featured by a rather high meltflow rate. Accordingly it is preferred that the instant polypropylene composition has a melt flow rate MFR 2 (230 °C) measured according to ISO 1133 of at least 30 g/10min, more preferably in the range of 30 to 200 g/10min, still more preferably in the range of 40 to 100 g/10min, yet more preferably in the range of 45 to 90 g/10min, still yet more preferably in the range of 50 to 80 g/10min.
- MFR 2 230 °C
- a further characteristic of the polypropylene composition is its softness. Accordingly it is preferred that the polypropylene composition has a flexural modulus measured on injection molded specimens of 80 x 10 x 4 mm 3 according to ISO 178 of not more than 600 MPa, more preferably of below 550 MPa, still more preferably of equal or below 500 MPa, yet more preferably in the range of 200 to below 550 MPa, still yet more preferably in the range of 250 to 500 MPa.
- the polypropylene composition of the present invention has a scratch visibility ⁇ L of less than 0.70, preferably less than 0.50, more preferably less than 0.1, still more preferably less than and most preferably less than 0.09, wherein the scratch visibility ⁇ L is measured according to the method described in the examples section below with a load of 5 N on a grained surface (grain K09 from Eschmann Textures).
- the heterophasic propylene copolymer (RAHECO) comprises a matrix (M) being a random propylene copolymer (R-PP) and dispersed therein an elastomeric propylene copolymer (E).
- the matrix (M) contains (finely) dispersed inclusions being not part of the matrix (M) and said inclusions contain the elastomeric propylene copolymer (E).
- inclusion indicates that the matrix (M) and the inclusion form different phases within the heterophasic propylene copolymer (RAHECO), said inclusions are for instance visible by high resolution microscopy, like electron microscopy or scanning force microscopy.
- the heterophasic propylene copolymer (RAHECO) comprises as polymer components only the random propylene copolymer (R-PP) and the elastomeric propylene copolymer (E).
- the heterophasic propylene copolymer (RAHECO) may contain further additives but no other polymer in an amount exceeding 5 wt-%, more preferably exceeding 3 wt.-%, like exceeding 1 wt.-%, based on the total heterophasic propylene copolymer (RAHECO).
- One additional polymer which may be present in such low amounts is a polyethylene which is a by-reaction product obtained by the preparation of heterophasic propylene copolymer (RAHECO) (see in detail below). Accordingly it is in particular appreciated that the instant heterophasic propylene copolymer (RAHECO) contains only the random propylene copolymer (R-PP), the elastomeric propylene copolymer (E) and optionally polyethylene in amounts as mentioned in this paragraph.
- R-PP random propylene copolymer
- E elastomeric propylene copolymer
- the polypropylene composition of the present invention can be regarded as a heterophasic system.
- the random propylene copolymer (R-PP) of the heterophasic propylene copolymer (RAHECO) constitutes also the matrix (M) of the overall polypropylene composition.
- the elastomeric propylene copolymer (E) and the plastomer (P) are (finely) dispersed in said matrix (M). Thereby the elastomeric propylene copolymer (E) and the plastomer (P) may form separate inclusions in the matrix (M), i.e. in the random propylene copolymer (R-PP), or the plastomer (P) may form an inclusion within the inclusion of the elastomeric propylene copolymer (E).
- the heterophasic propylene copolymer (RAHECO) according to this invention is featured by a rather high melt flow rate. Accordingly, the heterophasic propylene copolymer (RAHECO) has a melt flow rate MFR 2 (230 °C) of at least 7 g/10min, more preferably of at least 15 g/10min, still more preferably of at least 20 g/10min, yet more preferably of at least 35 g/10min, like of at least 50 g/10min, still yet more preferably of at least 60 g/10min or of at least 75 g/10min, like of at least 90 g/10min.
- MFR 2 230 °C
- Upper ranges are preferably not more than 160 g/10min, more preferably not more than 130 g/10min, still more preferably not more than 100 g/10min, yet more preferably not more than 90 g/10min, like not more than 70 g/10min.
- preferred ranges are in the range of 7.0 to 200.0 g/10min, more preferably in the range of 20 to 160 g/10 min, still more preferably in the range of 35 to 130 g/10min, yet more preferably in the range of 50 to 100 g/10min, like 60 to 100 g/10min.
- the heterophasic propylene copolymer is thermo mechanically stable. Accordingly it is appreciated that the heterophasic propylene copolymer (RAHECO) has a melting temperature of at least 130 °C, more preferably in the range of 130 to 150 °C, still more preferably in the range of 130 to 148 °C.
- the heterophasic propylene copolymer has a rather low crystallization temperature, i.e. of not more than 110 °C, more preferably in the range of 85 to 110 °C, still more preferably in the range of 90 to 108 °C.
- the heterophasic propylene copolymer comprises apart from propylene also comonomers.
- the heterophasic propylene copolymer comprises apart from propylene ethylene and/or C 4 to C 12 ⁇ -olefins.
- propylene copolymer according to this invention is understood as a polypropylene comprising, preferably consisting of, units derivable from
- the propylene copolymers according to this invention i.e. the heterophasic propylene copolymer (RAHECO), the random propylene copolymers (R-PP), the first propylene copolymer fraction (R-PP1), the second propylene copolymer fraction (R-PP2), and the elastomeric propylene copolymer (E), comprise monomers copolymerizable with propylene, for example comonomers such as ethylene and/or C 4 to C 12 ⁇ -olefins, in particular ethylene and/or C 4 to C 8 ⁇ -olefins, e.g. 1-butene and/or 1-hexene.
- RHECO heterophasic propylene copolymer
- R-PP random propylene copolymers
- R-PP1 the first propylene copolymer fraction
- R-PP2 the second propylene copolymer fraction
- E elastomeric propylene copolymer
- the propylene copolymers according to this invention comprise, especially consist of, monomers copolymerizable with propylene from the group consisting of ethylene, 1-butene and 1-hexene. More specifically the propylene copolymers of this invention comprise - apart from propylene - units derivable from ethylene and/or 1-butene. In a preferred embodiment the propylene copolymers according to this invention comprise units derivable from ethylene and propylene only. Still more preferably the random propylene copolymer (R-PP) as well as the elastomeric propylene copolymer (E) contain the same comonomers, like ethylene.
- R-PP random propylene copolymer
- E elastomeric propylene copolymer
- the elastomeric propylene copolymer (E) is preferably an ethylene propylene rubber (EPR), whereas the random propylene copolymer (R-PP) is a random ethylene propylene copolymer (R-PP).
- the heterophasic propylene copolymer (RAHECO) preferably has a rather high total comonomer content which contributes to the softness of the material.
- the comonomer content of the heterophasic propylene copolymer (RAHECO) is at least 5.0 wt.-%, preferably in the range of 6.0 to 15.0 wt.-%, more preferably in the range of 7.0 to 14.0 wt.-%, yet more preferably in the range of 7.5 to 13.5 wt.-%.
- the xylene cold soluble (XCS) fraction measured according to according ISO 16152 (25 °C) of the heterophasic propylene copolymer (RAHECO) is at least 15 wt.-%, preferably in the range of 15 to 50 wt.-%, more preferably in the range of 18 to 40 wt.-%, still more preferably in the range of 20 to 40 wt.-%.
- xylene cold soluble (XCS) fraction of the heterophasic propylene copolymer (RAHECO) is specified by its intrinsic viscosity.
- a low intrinsic viscosity (IV) values reflect a low weight average molecular weight.
- the xylene cold soluble fraction (XCS) of the heterophasic propylene copolymer (RAHECO) has an intrinsic viscosity (IV) measured according to ISO 1628/1 (at 135 °C in decalin) of below 2.0 dl/g, more preferably of in the range of 0.8 to below 2.0 dl/g, still more preferably in the range of 1.0 to 1.9 dl/g, still yet more preferably like in the range of 1.0 to below 1.8 dl/g, like in the range of 1.0 to below 1.7 dl/g.
- IV intrinsic viscosity
- the comonomer content, i.e. ethylene content, of the xylene cold soluble (XCS) fraction of the heterophasic propylene copolymer (RAHECO) is not more than 35.0 wt.-%, more preferably in the range of 18.0 to 35.0 wt.-%, still more preferably in the range of 20.0 to 32.0 wt.-%, yet more preferably in the range of 20.0 to 30.0 wt.-%.
- the comonomers present in the xylene cold soluble (XCS) fraction are those defined above for the random propylene copolymer (R-PP) and the elastomeric propylene copolymer (E), respectively.
- the comonomer is ethylene only.
- the heterophasic propylene copolymer can be further defined by its individual components, i.e. the random propylene copolymer (R-PP) and the elastomeric propylene copolymer (E).
- the random propylene copolymer (R-PP) comprises monomers copolymerizable with propylene, for example comonomers such as ethylene and/or C 4 to C 12 ⁇ -olefins, in particular ethylene and/or C 4 to C 8 ⁇ -olefins, e.g. 1-butene and/or 1-hexene.
- the random propylene copolymer (R-PP) according to this invention comprises, especially consists of, monomers copolymerizable with propylene from the group consisting of ethylene, 1-butene and 1-hexene.
- random propylene copolymer (R-PP) of this invention comprises - apart from propylene - units derivable from ethylene and/or 1-butene.
- the random propylene copolymer (R-PP) comprises units derivable from ethylene and propylene only.
- the heterophasic propylene copolymer (RAHECO) is featured by a rather high comonomer content.
- the comonomer content of the random propylene copolymer (R-PP) is at least 2.0 wt.-%, more preferably in the range of 2.0 to 9.0 wt.-%, yet more preferably in the range of 2.5 to 8.0 wt.-%, still more preferably in the range of 3.0 to 7.0 wt.-%, like in the range of 3.5 to 6.0 wt.-%.
- random indicates that the comonomers of the random propylene copolymer (R-PP), as well as of the first propylene copolymer fraction (R-PP1) and the second propylene copolymer fraction (R-PP2) are randomly distributed within the propylene copolymers.
- random is understood according to IUPAC ( Glossary of basic terms in polymer science; IUPAC recommendations 1996 ).
- the random propylene copolymer (R-PP) preferably comprises at least two polymer fractions, like two or three polymer fraction, all of them are propylene copolymers. Even more preferred the random propylene copolymer (R-PP) comprises, preferably consists of, a first propylene copolymer fraction (R-PP1) and a second propylene copolymer fraction (R-PP2). It is preferred that the first propylene copolymer fraction (R-PP1) is the comonomer lean fraction whereas the second propylene copolymer fraction (R-PP2) is the comonomer rich fraction.
- the first propylene copolymer faction (R-PP1) has a comonomer content in the range of 1.0 to 6.0 wt.-%, preferably in the range of 1.5 to 6.0 wt.-%, still more preferably in the range of 2.0 to 5.0, like in the range of 2.0 to 4.5 wt.-%.
- the second propylene copolymer fraction (R-PP2) has preferably a comonomer content in the range of 3.0 to 12.0 wt.-%, more preferably in the range of 3.5 to 10.0 wt.-%, like in the range of 4.5 to 8.0 wt.-%.
- inequation (I), preferably inequation (Ia), more preferably inequation (Ib), is fulfilled: R - PP - R - PP ⁇ 1 ⁇ 0.5 R - PP - R - PP ⁇ 1 ⁇ 1.5 4.0 ⁇ R - PP - R - PP ⁇ 1 ⁇ 2.0 wherein
- first propylene copolymer fraction (R-PP1) and second propylene copolymer fraction (R-PP2) Concerning the comonomers used for the first propylene copolymer fraction (R-PP1) and second propylene copolymer fraction (R-PP2) reference is made to the comonomers of the random propylene copolymer (R-PP).
- the first propylene copolymer fraction (R-PP1) and the second propylene copolymer fraction (R-PP2) contain the same comonomers, like ethylene.
- a further component of the heterophasic propylene copolymer is the elastomeric propylene copolymer (E) dispersed in the matrix (M). Concerning the comonomers used in the elastomeric propylene copolymer (E) it is referred to the information provided for the heterophasic propylene copolymer (RAHECO). Accordingly the elastomeric propylene copolymer (E) comprises monomers copolymerizable with propylene, for example comonomers such as ethylene and/or C 4 to C 12 ⁇ -olefins, in particular ethylene and/or C 4 to C 8 ⁇ -olefins, e.g.
- the elastomeric propylene copolymer (E) comprises, especially consists of, monomers copolymerizable with propylene from the group consisting of ethylene, 1-butene and 1-hexene. More specifically the elastomeric propylene copolymer (E) comprises - apart from propylene - units derivable from ethylene and/or 1-butene. Thus in an especially preferred embodiment the elastomeric propylene copolymer (E) comprises units derivable from ethylene and propylene only.
- the comonomer content of the elastomeric propylene copolymer (E) preferably is in the range of 20.0 to 40.0 wt.-%, more preferably in the range of 25.0 to 38.0 wt.-%, like in the range of 28.0 to 34.0 wt.-%.
- the weight ratio between the first propylene copolymer fraction (R-PP1) and second propylene copolymer fraction (R-PP2) preferably is 25:75 to 70:30, more preferably 30:70 to 60:40, still more preferably 33:67 to 55:45.
- the weight ratio between the random propylene copolymer (R-PP) and the elastomeric propylene copolymer (E) preferably is 95:5 to 70:30, more preferably 90:10 to 80:20.
- heterophasic propylene copolymer is preferably obtained by visbreaking a heterophasic propylene copolymer (Pre-RAHECO). Accordingly in the following the heterophasic propylene copolymer (Pre-RAHECO) is described in more detail.
- the heterophasic propylene copolymer comprises a matrix (Pre-M) being a random propylene copolymer (Pre-R-PP) and an elastomeric propylene copolymer (Pre-E) dispersed in said matrix (Pre-M).
- Pre-M a matrix
- Pre-R-PP a random propylene copolymer
- Pre-E elastomeric propylene copolymer
- the random propylene copolymer comprises at least two polymer fractions, like two or three polymer fraction, all of them are propylene copolymers.
- the random propylene copolymer (Pre-R-PP) comprises, preferably consists of, a first propylene copolymer fraction (Pre-R-PP1) and a second propylene copolymer fraction (Pre-R-PP2).
- Visbreaking does not alter the amount or type of comonomer. Accordingly with regard to the amounts of comonomer in the heterophasic propylene copolymer (Pre-RAHECO) and its individual fractions it is referred to the heterophasic propylene copolymer (RAHECO) and its fractions, respectively. The same applies for the comonomer types used in these fractions.
- the heterophasic propylene copolymer (Pre-RAHECO) preferably has a melt flow rate MFR 2 (230 °C) measured according to ISO 1133 in the range of 0.3 to 15.0 g/10min, more preferably in the range of 0.6 to 10.0 g/10min.
- the melt flow rate MFR 2 (230 °C) of the heterophasic propylene copolymer (Pre-RAHECO) is lower compared to the melt flow rate MFR 2 (230 °C) ofthe (visbroken) heterophasic propylene copolymer (RAHECO).
- the difference between the melt flow rate MFR 2 (230 °C) ofthe (visbroken) heterophasic propylene copolymer (RAHECO) and the heterophasic propylene copolymer (Pre-RAHECO) [MFR 2 (RAHECO) - MFR 2 (Pre-RAHECO)] is at least 2.5 g/10min, more preferably at least 5.0 g/10min, yet more preferably at least 20.0 g/10min, still more preferably in the range of 25.0 to 70.0 g/10min, like in the range of 30.0 to 60.0 g/10min.
- the xylene cold soluble (XCS) fraction measured according to according ISO 16152 (25 °C) of the heterophasic propylene copolymer (Pre-RAHECO) is at least 15 wt.-%, preferably in the range of 15 to 50 wt.-%, more preferably in the range of 18 to 40 wt.-%, still more preferably in the range of 20 to 40.
- the xylene cold soluble fraction (XCS) of the heterophasic propylene copolymer (Pre-RAHECO) preferably has an intrinsic viscosity (IV) measured according to ISO 1628/1 (at 135 °C in decaline) of below 3.0 dl/g, more preferably of in the range of 1.0 to below 2.5 dl/g, still more preferably in the range of 1.0 to 2.3 dl/g.
- the random propylene copolymer comprises at least two, more preferably comprises two, yet more preferably consists of two, propylene copolymer fractions (Pre-R-PP1) and (Pre-R-PP2), the two propylene copolymer fractions (Pre-R-PP1) and (Pre-R-PP2) differ from each other by the comonomer content. Accordingly it is preferred that the first propylene copolymer fraction (Pre-R-PP1) is the comonomer lean fraction whereas the second propylene copolymer fraction (Pre-R-PP2) is the comonomer rich fraction.
- first propylene copolymer fraction (R-PP1) and the second propylene copolymer fraction (R-PP2) Concerning the preferred comonomer content in each fraction it is referred to the information provided for the first propylene copolymer fraction (R-PP1) and the second propylene copolymer fraction (R-PP2), respectively.
- first propylene copolymer fraction (R-PP1) and the second propylene copolymer fraction (R-PP2) are also with regard to this requirement.
- first propylene copolymer fraction (Pre-R-PP1) and the second propylene copolymer fraction (Pre-R-PP2) have nearby the same melt flow rate. Accordingly it is preferred that difference between the melt flow rate of the random propylene copolymer (Pre-R-PP) and the first propylene copolymer fraction (R-PP1) [MFR(Pre-R-PP) - MFR(Pre-R-PP1)] is below +/- 1.5 g/10min, more preferably +/- 1.0 g/10min, yet more preferably +/- 0.5 g/10min.
- the first propylene copolymer fraction (R-PP1) and the second propylene copolymer fraction (Pre-R-PP2) have a melt flow rate MFR 2 (230 °C) in the range of 0.5 to 18.0 g/10min, more preferably in the range of 2.0 to 15.0g/10min.
- a further component of the heterophasic propylene copolymer is the elastomeric propylene copolymer (Pre-E) dispersed in the matrix (Pre-M), i.e. in the random propylene copolymer (Pre-R-PP).
- Pre-M matrix
- Pre-R-PP random propylene copolymer
- any information provided regarding the comonomer content and comonomer type of the elastomeric propylene copolymer (E) can be used one-to-one for the elastomeric propylene copolymer (Pre-E).
- the weight ratio between the first propylene copolymer fraction (Pre-R-PP1) and second propylene copolymer fraction (Pre-R-PP2) preferably is 25:75 to 70:30, more preferably 30:70 to 60:40, still more preferably 33:67 to 55:45.
- the weight ratio between the random propylene copolymer (Pre-R-PP) and the elastomeric propylene copolymer (Pre-E) preferably preferably is 95:5 to 70:30, more preferably 90:10 to 80:20.
- heterophasic propylene copolymer is obtained by sequential polymerization process as described below.
- Pre-RAHECO the heterophasic propylene copolymer
- first the heterophasic propylene copolymer (Pre-RAHECO) is produced in sequential polymerization process and subsequently degraded (visbroken) in an extruder, preferably together with the additional components present in the instant polypropylene composition.
- the heterophasic propylene copolymer (RAHECO) or the heterophasic propylene copolymer (Pre-RAHECO) can be produced in a sequential polymerization process. Accordingly the heterophasic propylene copolymer (RAHECO) or the heterophasic propylene copolymer (Pre-RAHECO) are preferably produced in a sequential polymerization process comprising at least two reactors, like three reactors. In case of the heterophasic propylene copolymer (Pre-RAHECO) it must be subsequently visbroken to reach the desired melt flow rate.
- heterophasic propylene copolymer (RAHECO) or the heterophasic propylene copolymer (Pre-RAHECO) is obtained by a sequential polymerization process comprising the steps of
- heterophasic propylene copolymer RHECO
- heterophasic propylene copolymer Pre- RAHECO
- the random propylene copolymer R-PP
- the random propylene copolymer Pre-R-PP
- the first propylene copolymer fraction PP1
- the first propylene copolymer fraction Pre-PP1
- the second propylene copolymer fraction R-PP2
- the second propylene copolymer fraction Pre-R-PP2
- the elastomeric copolymer E
- elastomeric copolymer Pre-E
- the term “sequential polymerization process” indicates that the heterophasic propylene copolymer (RAHECO) or the heterophasic propylene copolymer (Pre- RAHECO) is produced in at least two, like three, reactors connected in series. Accordingly the present process comprises at least a first reactor, a second reactor, and optionally a third reactor.
- the term “polymerization process” shall indicate that the main polymerization takes place. Thus in case the process consists of three polymerization reactors, this definition does not exclude the option that the overall process comprises for instance a pre-polymerization step in a pre-polymerization reactor.
- the term “consist of” is only a closing formulation in view of the main polymerization process.
- the first reactor is preferably a slurry reactor and can be any continuous or simple stirred batch tank reactor or loop reactor operating in bulk or slurry.
- Bulk means a polymerization in a reaction medium that comprises of at least 60 % (w/w) monomer.
- the slurry reactor is preferably a (bulk) loop reactor.
- the second reactor and the third reactor are preferably gas phase reactors.
- gas phase reactors can be any mechanically mixed or fluid bed reactors.
- the gas phase reactors comprise a mechanically agitated fluid bed reactor with gas velocities of at least 0.2 m/sec.
- the gas phase reactor is a fluidized bed type reactor preferably with a mechanical stirrer.
- the first reactor is a slurry reactor, like loop reactor
- the second reactor and the third reactor (R3) are gas phase reactors (GPR).
- GPR gas phase reactors
- a preferred multistage process is a "loop-gas phase"-process, such as developed by Borealis A/S, Denmark (known as BORSTAR® technology) described e.g. in patent literature, such as in EP 0 887 379 , WO 92/12182 WO 2004/000899 , WO 2004/111095 , WO 99/24478 , WO 99/24479 or in WO 00/68315 .
- a further suitable slurry-gas phase process is the Spheripol ® process of Basell.
- the conditions for the first reactor i.e. the slurry reactor, like a loop reactor, may be as follows:
- reaction mixture of the first reactor is transferred to the second reactor, i.e. gas phase reactor, where the conditions are preferably as follows:
- the condition in the third reactor is similar to the second reactor.
- the residence time can vary in the three reactor zones.
- the residence time in bulk reactor e.g. loop is in the range 0.1 to 2.5 hours, e.g. 0.15 to 1.5 hours and the residence time in gas phase reactor will generally be 0.2 to 6.0 hours, like 0.5 to 4.0 hours.
- the polymerization may be effected in a known manner under supercritical conditions in the first reactor, i.e. in the slurry reactor, like in the loop reactor, and/or as a condensed mode in the gas phase reactors.
- the process comprises also a prepolymerization with the catalyst system, as described in detail below, comprising a Ziegler-Natta procatalyst, an external donor and optionally a cocatalyst.
- the catalyst system as described in detail below, comprising a Ziegler-Natta procatalyst, an external donor and optionally a cocatalyst.
- the prepolymerization is conducted as bulk slurry polymerization in liquid propylene, i.e. the liquid phase mainly comprises propylene, with minor amount of other reactants and optionally inert components dissolved therein.
- the prepolymerization reaction is typically conducted at a temperature of 10 to 60 °C, preferably from 15 to 50 °C, and more preferably from 20 to 45 °C.
- the pressure in the prepolymerization reactor is not critical but must be sufficiently high to maintain the reaction mixture in liquid phase.
- the pressure may be from 20 to 100 bar, for example 30 to 70 bar.
- the catalyst components are preferably all introduced to the prepolymerization step.
- the solid catalyst component (i) and the cocatalyst (ii) can be fed separately it is possible that only a part of the cocatalyst is introduced into the prepolymerization stage and the remaining part into subsequent polymerization stages. Also in such cases it is necessary to introduce so much cocatalyst into the prepolymerization stage that a sufficient polymerization reaction is obtained therein.
- hydrogen may be added into the prepolymerization stage to control the molecular weight of the prepolymer as is known in the art.
- antistatic additive may be used to prevent the particles from adhering to each other or to the walls of the reactor.
- the heterophasic propylene copolymer (RAHECO) or the heterophasic propylene copolymer (Pre-RAHECO) is obtained by a multistage polymerization process, as described above, in the presence of a catalyst system comprising as component (i) a Ziegler-Natta procatalyst which contains a trans-esterification product of a lower alcohol and a phthalic ester.
- heterophasic propylene copolymer or the heterophasic propylene copolymer (Pre-RAHECO) is obtained by a multistage polymerization process, as described above, in the presence of a Ziegler-Natta olefin polymerization catalyst comprising a component in the form of particles having a predetermined size range which has been produced in a process comprising:
- the group 2 metal used in the preparation of the catalyst is preferably magnesium and the liquid organic medium for reacting the group 2 metal compound preferably comprises a C 6 -C 10 aromatic hydrocarbon, preferably toluene.
- An electron donor compound to be reacted with the group 2 metal compound preferably is a mono- or diester of an aromatic carboxylic acid or diacid, the latter being able to form a chelate-like structured complex.
- Said aromatic carboxylic acid ester or diester can be formed in situ by reaction of an aromatic carboxylic acid chloride or diacid dichloride with a C 2 -C 16 alkanol and/or diol, and is preferably dioctyl phthalate or bis-(2-ethylhexyl) phthalate.
- the reaction for the preparation of the group 2 metal complex is generally carried out at a temperature of 20 to 80 °C, and in case that the group 2 metal is magnesium, the preparation of the magnesium complex may advantageously be carried out at a temperature of 50 to 70 °C.
- the compound of a group 4-6 metal is preferably a compound of a group 4 metal.
- the group 4 metal is preferably titanium, and its compound to be reacted with the complex of a group 2 metal is preferably a halide.
- the compound of a group 4-6 metal can also be selected from group 5 and group 6 metals, such as Cu, Fe, Co, Ni and/or Pd compounds.
- a turbulence minimizing agent (TMA) is added to the reaction mixture before solidifying said particles of the dispersed phase, the TMA being inert and soluble in the reaction mixture under reaction conditions.
- the turbulence minimizing agent (TMA) or mixtures thereof are preferably polymers having linear aliphatic carbon backbone chains, which might be branched with only short side chains in order to serve for uniform flow conditions when stirring.
- Said TMA is in particular preferably selected from alpha-olefin polymers having a high molecular weight Mw (as measured by gel permeation chromatography) of about 1 to 40 x 10 6 , or mixtures thereof.
- polymers of alpha-olefin monomers with 6 to 20 carbon atoms and more preferably polyoctene, polynonene, polydecene, polyundecene or polydodecene or mixtures thereof, having the molecular weight and general backbone structure as defined before.
- TMA is polydecene.
- said turbulence minimizing agent can be added in any process step before particle formation starts, i.e. at the latest before solidification of the emulsion, and is added to the emulsion in an amount of 1 to 1000 ppm, preferably 5 to 100 ppm and more preferably 5 to 50 ppm, based on the total weight of the reaction mixture.
- a preferred embodiment of the process for producing catalysts for preparing the heterophasic propylene copolymer (RAHECO) or the heterophasic propylene copolymer (Pre-RAHECO) of the present invention comprises: preparing a solution of a magnesium complex by reacting alkoxy magnesium compound and an electron donor or precursor thereof in a C 6 -C 10 aromatic liquid reaction medium comprising C 6 -C 10 aromatic hydrocarbon or a mixture of C 6 -C 10 aromatic hydrocarbon and C 5 -C 9 aliphatic hydrocarbon; reacting said magnesium complex with a compound of at least one fourvalent group 4 metal at a temperature greater than 10 °C and less than 60 °C, to produce an emulsion of a denser, TiCl 4 /toluene-insoluble, oil dispersed phase having a group 4 metal/Mg mol ratio of 0.1 to 10 in an oil disperse phase having a group 4 metal/Mg mol ratio of 10 to 100; maintaining the droplets of said dispersed phase
- the said disperse and dispersed phases are thus distinguishable from one another by the fact that the denser oil, if contacted with a solution of titanium tetrachloride in toluene, will not dissolve in it.
- a suitable TiCl 4 /toluene solution for establishing this criterion would be one having a TiCl 4 /toluene mol ratio of 0.1 to 0.3.
- the disperse and dispersed phase are also distinguishable by the fact that the great preponderance of the Mg provided (as complex) for the reaction with the group 4 metal compound is present in the dispersed phase, as revealed by comparison of the respective group 4 metal /Mg mol ratios.
- the resulting particles from the dispersed phase of the emulsion are of a size, shape (spherical) and uniformity which render the final catalyst extremely effective in olefin polymerization.
- This morphology is preserved during the heating to solidify the particles, and of course throughout the final washing and drying steps. It is, by contrast, difficult to the point of impossibility to achieve such morphology through precipitation, because of the fundamental uncontrollability of nucleation and growth, and the large number of variables which affect these events.
- the electron donor is preferably an aromatic carboxylic acid ester, particularly favored esters being dioctyl phthalate and bis-(2-ethylhexyl) phthalate.
- the donor may conveniently be formed in situ by reaction of an aromatic carboxylic acid chloride precursor with a C 2 -C 16 alkanol and/or diol.
- the liquid medium preferably comprises toluene.
- emulsifying agents/emulsion stabilizers can be used additionally in a manner known in the art for facilitating the formation and/or stability of the emulsion.
- surfactants e.g. a class based on acrylic or methacrylic polymers can be used.
- said emulsion stabilizers are acrylic or methacrylic polymers, in particular those with medium sized ester side chains having more than 10, preferably more than 12 carbon atoms and preferably less than 30, and preferably 12 to 20 carbon atoms in the ester side chain.
- Particularly preferred are unbranched C 12 to C 20 acrylates such as poly(hexadecyl)-metacrylate and poly(octadecyl)-metacrylate.
- the group 4 metal/Mg mol ratio of the denser oil is 1 to 5, preferably 2 to 4, and that of the disperse phase oil is 55 to 65.
- the ratio of the mol ratio of group 4 metal/Mg in the disperse phase oil to that in the denser oil is at least 10.
- Solidification of the dispersed phase droplets by heating is suitably carried out at a temperature of 70 to 150 °C, usually at 90 to 110 °C.
- the finally obtained catalyst is desirably in the form of particles having average size ranges of 5 to 200 micrometers, preferably 10 to 100 micrometers, more preferably 20 to 50 micrometers.
- the reagents can be added to the aromatic reaction medium in any order. However, it is preferred that in a first step the alkoxy magnesium compound is reacted with a carboxylic acid halide precursor of the electron donor to form an intermediate; and in a second step the obtained product is further reacted with the group 4 metal.
- the magnesium compound preferably contains from 1 to 20 carbon atoms per alkoxy group, and the carboxyl acid should contain at least 8 carbon atoms.
- Reaction of the magnesium compound, carboxylic acid halide and alcohol proceeds satisfactorily at temperatures in the range of 20 to 80 °C, preferably 50 to 70 °C.
- the product of that reaction, the "Mg complex” is reacted with the group 4 metal compound at a lower temperature, to bring about the formation of a two-phase, oil-in-oil, product.
- the reaction medium used as solvent can be aromatic or a mixture of aromatic and aliphatic hydrocarbons, the latter one containing preferably 5 to 9 carbon atoms, more preferably 5 to 7 carbon atoms, or mixtures thereof.
- the liquid reaction medium used as solvent in the reaction is aromatic and is more preferably selected from hydrocarbons such as substituted and unsubstituted benzenes, preferably from alkylated benzenes, even more preferably from toluene and the xylenes, and most preferably being toluene.
- the molar ratio of said aromatic medium to magnesium is preferably less than 10, for instance from 4 to 10, preferably from 5 to 9.
- the alkoxy magnesium compound group is preferably selected from the group consisting of magnesium dialkoxides, complexes of magnesium dihalide and an alcohol, and complexes of a magnesium dihalide and a magnesium dialkoxide. It may be a reaction product of an alcohol and a magnesium compound selected from the group consisting of dialkyl magnesium, alkyl magnesium alkoxides, alkyl magnesium halides and magnesium dihalides. It can further be selected from the group consisting of dialkyloxy magnesiums, diaryloxy magnesiums, alkyloxy magnesium halides, aryloxy magnesium halides, alkyl magnesium alkoxides, aryl magnesium alkoxides, and alkyl magnesium aryloxides.
- Typical magnesium alkyls are ethylbutyl magnesium, dibutyl magnesium, dipropyl magnesium, propylbutyl magnesium, dipentyl magnesium, butylpentyl magnesium, butyloctyl magnesium and dioctyl magnesium.
- R' is a butyl group and R" is an octyl group, i.e. the dialkyl magnesium compound is butyloctyl magnesium, most preferably the dialkyl magnesium compound is Mg[(Bu) 1.5 (OCt) 0.5 ].
- Dialkyl magnesium, alkyl magnesium alkoxide or magnesium dihalide can react with a polyhydric alcohol R(OH) m , with m being in the range of 2-4, or a monohydric alcohol ROH or mixtures thereof.
- Typical C 2 to C 6 polyhydric alcohol may be straight-chain or branched and include ethylene glycol, propylene glycol, trimethylene glycol, 1,2-butylene glycol, 1,3- butylene glycol, 1,4-butylene glycol, 2,3-butylene glycol, 1,5-pentanediol, 1,6-hexanediol, 1,8-octanediol, pinacol, diethylene glycol, triethylene glycol, and triols such as glycerol, methylol propane and pentaerythritol.
- the aromatic reaction medium may also contain a monohydric alcohol, which may be straight or branched chain.
- Typical C 1 -C 5 monohydric alcohols are methanol, ethanol, n-propanol, iso-propanol, n-butanol, iso-butanol, sec. butanol, tert. butanol, n-amyl alcohol, iso-amyl alcohol, sec. amyl alcohol, tert. amyl alcohol, diethyl carbinol, akt. amyl alcohol, sec. isoamyl alcohol, tert. butyl carbinol.
- Typical C 6 -C 10 monohydric alcohols are hexanol, 2-ethyl-1-butanol, 4-methyl-2-pentanol, 1-heptanol, 2-heptanol, 4-heptanol, 2,4-dimethyl-3-pentanol, 1-octanol, 2-octanol, 2-ethyl-1-hexanol, 1-nonanol, 5-nonanol, diisobutyl carbinol, 1-decanol, and 2,7-dimethyl-2-octanol.
- Typical > C 10 monohydric alcohols are n-1-undecanol, n-1-dodecanol, n-1-tridecanol, n-1-tetradecanol, n-1-pentadecanol, n-1-hexadecanol, n-1-heptadecanol, and n-1-octadecanol.
- the monohydric alcohols may be unsaturated, as long as they do not act as catalyst poisons.
- Preferable monohydric alcohols are those of formula ROH in which R is a C 2 -C 16 alkyl group, most preferably a C 4 -C 12 alkyl group, particularly 2-ethyl-1-hexanol or 1-octanol.
- R is a C 2 -C 16 alkyl group, most preferably a C 4 -C 12 alkyl group, particularly 2-ethyl-1-hexanol or 1-octanol.
- essentially all of the aromatic carboxylic acid ester is a reaction product of a carboxylic acid halide, preferably a dicarboxylic acid dihalide, more preferably an unsaturated dicarboxylic acid dihalide, most preferably phthalic acid dichloride, with the monohydric alcohol.
- the compound of a fourvalent group 4 metal containing a halogen is preferably a titanium tetrahalide.
- Equivalent to titanium tetrahalide is the combination of an alkoxy titanium halide and a halogenation agent, which are able to form a titanium tetrahalide in situ.
- the most preferred halide is the chloride.
- Reactive halogenated hydrocarbons preferably have the formula R'"X'" n , wherein R"' is a C 1 -C 20 hydrocarbyl group, particularly a C 1 -C 10 aliphatic hydrocarbyl group, X'" is a halogen, preferably chlorine, and n is an integer from 1 to 4.
- chlorinated hydrocarbons include monochloromethane, dichloromethane, trichloromethane (chloroform), tetrachloromethane, monochloroethane, (1,1)-dichloroethane, (1,1)-dichloroethane, (1,1,1)-trichloroethane, (1,1,2)-trichloroethane, (1,1,1,2)-tetrachlororethane, (1,1,2,2)-tetrachloroethane, pentachloroethane, hexachloroethane, 1-chloropropane, 2-chloropropane, (1,2)-dichloropropane, (1,3)-dichloropropane, (1,2,3)-trichloropropane, 1-chlorobutane, 2-chlorobutane, isobutyl chloride, tert.
- chlorinated hydrocarbons may also be unsaturated, provided that the unsaturation does not act as catalyst poison in the final catalyst.
- R"' is preferably a C 1 -C 10 alkyl group
- X'" is preferably chlorine and n is preferably 1 or 2.
- Preferred compounds include butyl chloride (BuCl), dichloroalkanes such as (1,4)-dichlorobutane, and tertiary butyl chloride.
- the catalyst preparation as described herein can be carried out batchwise, semi-continuously or continuously.
- the solution of the complex of the group 2 metal and said electron donor which is prepared by reacting the compound of said metal with said electron donor in an organic liquid reaction medium, is mixed with at least one compound of a transition metal which might be solved in the same or different organic liquid reaction medium.
- the so obtained solution is then agitated, possibly in the presence of an emulsion stabilizer, and then the agitated emulsion is fed into a temperature gradient reactor, in which the emulsion is subjected to a temperature gradient, thus leading to solidifying the droplets of a dispersed phase of the emulsion.
- the TMA is preferably contained in the solution of the complex or added to the solution before feeding the agitated solution to the temperature gradient reactor.
- an inert solvent in which the droplets are not soluble, can additionally be fed into that gradient reactor in order to improve that droplet formation and thus leading to a uniform grain size of the particles of the catalyst, which are formed in the temperature gradient reactor when passing through said line.
- additional solvent might be the same as the organic liquid reaction medium, which is used for preparing the solution of the complex of the group 2 metal as explained above in more detail.
- the solidified particles of the catalyst can subsequently be recovered by an in-stream filtering unit and are preferably subjected to washing in order to remove unreacted starting components.
- the recovered particulate product is washed at least once, preferably at least twice, most preferably at least three times with a hydrocarbon, which is preferably selected from aromatic and aliphatic hydrocarbons, preferably with toluene, particularly with hot (e.g. 90 °C) toluene, which may include a small amount, preferably about 0.01 - 10 vol% of TiCl 4 or an alkyl aluminium chloride, such as diethyl aluminium chloride (DEAC), in it.
- a further washing step is advantageous performed with heptane, most preferably with hot (e.g. 90 °C) heptane, and a still further washing step with pentane.
- a washing step typically includes several substeps.
- a favored washing sequence is, for example, one washing step with toluene at 90 °C, two washing steps with heptane at 90 °C and one or two washing steps with pentane at room temperature.
- washed catalyst is dried, e.g. by evaporation or flushing with nitrogen.
- the catalyst After washing and drying the catalyst can be stored for further use or can be subjected to further treatment steps or can immediately be fed to a polymerization reactor.
- the catalyst system which is used according to the present invention also comprises an aluminium alkyl compound, preferably of the general formula AlR 3-n X n wherein R stands for straight chain or branched alkyl group having 1 to 20, preferably 1 to 10 and more preferably 1 to 6 carbon atoms, X stands for halogen and n stands for 0, 1, 2 or 3, which aluminium alkyl compound is added, and brought into contact with the droplets of the dispersed phase of the agitated emulsion before recovering the solidified particles of the catalyst.
- an aluminium alkyl compound preferably of the general formula AlR 3-n X n wherein R stands for straight chain or branched alkyl group having 1 to 20, preferably 1 to 10 and more preferably 1 to 6 carbon atoms, X stands for halogen and n stands for 0, 1, 2 or 3, which aluminium alkyl compound is added, and brought into contact with the droplets of the dispersed phase of the agitated emulsion before recovering the solidified particles of the catalyst.
- the aluminium compound is added, in pure form or in the form of a solution, from shortly before the beginning of the emulsion formation until adding it to the washing liquid, e.g. toluene, in such an amount that the final Al content of the particles is from 0.05 to 1 wt%, preferably 0.1 to 0.8 wt% and most preferably 0.2 to 0.7 wt%. by weight of the final catalyst particles.
- the most preferred Al content may vary depending upon the type of the Al compound and on the adding step. For example, in some cases the most preferred amount may be 0.1 to 0.4 wt%.
- tri-(C 1 -C 6 )-alkyl aluminium compounds are used, tiethylaluminium being most preferred.
- alkyl aluminium In Ziegler-Natta catalysts alumimium alkyl compounds are used as cocatalysts, i.e. for activating the catalyst.
- alkyl aluminium does not only reduce and alkylate the actice metal, but it has also influence on the donor composition. It is well-known that alkyl aluminium compounds can remove carboxylic acid esters, which are used as internal donors. Simultaneously, external donors can be fixed on the catalyst.
- tri-ethyl aluminium (TEAl) is used as cocatalyst and silanes as external donors as is disclosed e.g. in articles Sacci, M.
- the internal donor preferably bis-(2-ethylhexyl) phthalate (DOP)
- DOP bis-(2-ethylhexyl) phthalate
- the extraction level is dependent on the concentration of the aluminium alkyl. The higher the concentration, the more of the internal donor can be extracted. Further, the addition of the external donor together with aluminium alkyl improves the donor exchange. The longer the reaction time is, the more external donor is bound on the catalyst.
- Particularly preferred external donors are any of the following: cyclohexyl methyl dimethyloxysilane, dicyclopentyl dimethoxysilane, diisopropyl dimethoxysilane, di-isobutyl dimethoxysilane and di-tert.-butyl dimethoxysilane. Most preferred are cyclohexyl methyl dimethoxysilane and dicyclopentyl dimethoxysilane, cyclohexyl methyl dimethoxysilane being particularly preferred.
- dicyclopentyl dimethoxy silane Si(OCH 3 ) 2 (cyclo-pentyl) 2
- cyclohexyl methyl dimethoxysilane Si(OCH 3 ) 2 (CH 3 )(cyclohexyl) 2
- diisopropyl dimethoxy silane Si(OCH 3 ) 2 (CH(CH 3 ) 2 ) 2 ].
- an external donor represented by formula (III) is used SI(OCH 3 ) 2 R 2 5 (III) wherein R 5 represents a branched-alkyl group having 3 to 12 carbon atoms, preferably a branched-alkyl group having 3 to 6 carbon atoms, or a cyclo-alkyl having 4 to 12 carbon atoms, preferably a cyclo-alkyl having 5 to 8 carbon atoms.
- R 5 is selected from the group consisting of iso-propyl, isobutyl, iso-pentyl, tert.-butyl, tert.-amyl, neopentyl, cyclopentyl, cyclohexyl, methylcyclopentyl and cycloheptyl.
- the external donor is selected from the group consisting of diethylaminotriethoxysilane [Si(OCH 2 CH 3 ) 3 (N(CH 2 CH 3 ) 2 )], dicyclopentyl dimethoxy silane [Si(OCH 3 ) 2 (cyclo-pentyl) 2 ], cylohexylmethyldimethoxysilane [Si(OCH 3 ) 2 CH 3 (cyclo-hexyl)], diisopropyl dimethoxy silane [Si(OCH 3 ) 2 (CH(CH 3 ) 2 ) 2 ] and mixtures thereof.
- a solution containing alkyl aluminium and external donor in an organic solvent e.g. pentane, are added to the catalyst after solidification of the catalyst particles.
- the catalyst which is obtained by the above described process is a non-supported Ziegler-Natta catalyst.
- Non-supported catalysts do not use any external carrier, contrary to conventional catalysts, e.g. conventional Ziegler-Natta catalysts, which are e.g. supported on silica or MgCl 2 .
- the heterophasic propylene copolymer (Pre-RAHECO) is subjected a visbreaking step obtaining thereby the heterophasic propylene copolymer (RAHECO).
- the visbreaking may be carried out in any known manner, but typically the present invention envisages chemical visbreaking using a peroxide visbreaking agent.
- Typical visbreaking agents are 2,5-dimethyl-2,5-bis(tert.butyl-peroxy)hexane (DHBP) (for instance sold under the tradenames Luperox 101 and Trigonox 101), 2,5-dimethyl-2,5-bis(tert.butyl-peroxy)hexyne-3 (DYBP) (for instance sold under the tradenames Luperox 130 and Trigonox 145), dicumyl-peroxide (DCUP) (for instance sold under the tradenames Luperox DC and Perkadox BC), di-tert.butyl-peroxide (DTBP) (for instance sold under the tradenames Trigonox B and Luperox Di), tert.butyl-cumyl-peroxide (BCUP) (for instance sold under the tradenames Trigonox T and Luperox 801) and bis (tert.butylperoxyisopropyl)benzene (DIPP) (for instance sold under the tradenames Perkadox 14S and Lupperox
- Suitable amounts of peroxide to be employed in accordance with the present invention are in principle known to the skilled person and can easily be calculated on the basis of the amount of heterophasic propylene copolymer (Pre-RAHECO) to be subjected to visbreaking, the MFR 2 (230 °C) value of the heterophasic propylene copolymer (Pre-RAHECO) to be subjected to visbreaking and the desired target MFR 2 (230 °C) of the product, i.e. the heterophasic propylene copolymer (RAHECO), to be obtained.
- Pre-RAHECO heterophasic propylene copolymer
- typical amounts of peroxide visbreaking agent are from 0.005 to 0.5 wt.-%, more preferably from 0.01 to 0.2 wt.-%, based on the amount of propylene polymer employed.
- the visbraking is accomplished parallel to the mixing of the hetrophasic propylene copolymer (Pre-RAHECO) with the other components required for the present invention (see below).
- a further essential requirement is the present of a plastomer (P).
- the plastomer (P) is (chemically) different to the elastomeric copolymer (E) of the heterophasic propylene copolymer (RAHECO). More precisely the plastomer (P) is a linear low density polyethylene (LLDPE). Accordingly the plastomer (P), i.e. the linear low density polyethylene (LLDPE), has a density measured according to ISO 1183-187 in the range 820 to 950 kg/m 3 , more preferably in the range of 850 to 900 kg/m 3 , yet more preferably in the range of 840 to 890 kg/m 3 , like in the range of 860 to 890 kg/m 3 .
- the plastomer (P), i.e. the linear low density polyethylene (LLDPE), is featured by a specific melt flow rate, namely by a melt flow rate MFR 2 (190 °C) measured according to ISO 1133 of equal or more than 15.0 g/10min, more preferably in the range of more than 15.0 to 100.0 g/10min, still more preferably in the range of 20.0 to 60.0 g/10min.
- MFR 2 melt flow rate measured according to ISO 1133 of equal or more than 15.0 g/10min, more preferably in the range of more than 15.0 to 100.0 g/10min, still more preferably in the range of 20.0 to 60.0 g/10min.
- the plastomer (P), i.e. the linear low density polyethylene (LLDPE), is a copolymer containing as a major part units derivable from ethylene.
- the plastomer (P), i.e. the linear low density polyethylene (LLDPE) comprises at least 50.0 wt.-% units derivable from ethylene, more preferably at least 55.0 wt.-% of units derived from ethylene.
- the plastomer (P), i.e. the linear low density polyethylene (LLDPE) comprises 50.0 to 85.0 wt.-%, more preferably 60.0 to 78 wt.-%, units derivable from ethylene.
- the comonomers present in the plastomer (P), i.e. the linear low density polyethylene (LLDPE), are C 4 to C 20 ⁇ -olefins, like 1-butene, 1-hexene and 1-octene, the latter especially preferred. Accordingly in one specific embodiment the plastomer (P), i.e. the linear low density polyethylene (LLDPE), is an ethylene-1-octene polymer with the amounts given in this paragraph.
- any polysiloxane can be used. Esspecially preferred is a high molecular weight polysiloxane or a ultra-high molecular weight polysiloxane. It is in particular preferred that the polysiloxane is a polydialkylsiloxane, like a high molecular weight polydialkylsiloxane or ultra-high molecular weight polydialkylsiloxane.
- a preferred polydialkylsiloxane i.e. a preferred high molecular weight polydialkylsiloxane or a preferred ultra-high molecular weight polydialkylsiloxane, is a polydialkylsiloxane having a C 1 to C 4 alkyl group, such as polydimethylsiloxane, polydiethylsiloxane, polymethylethylsiloxane, polydipropylsiloxane and polydibutylsiloxane.
- the molecular weights of the polysiloxane, like the polydialkylsiloxane, e.g. polydimethylsiloxane, in terms of kinematic viscosity is at least 5,000,000 cSt, preferably at least 10,000,000 cSt, and more preferably at least 15,000,000 cSt. Accordingly typical ranges are 5,000,000 to 30,000,000 cSt, more preferably 10,000,000 to 25,000,000 cSt.
- the polysiloxanes may be used as pure materials or mixed via extrusion with various thermoplastics.
- the polysiloxane like the polydialkylsiloxane, e.g. polydimethylsiloxane, is provided as a masterbatch and thus is mixed with a polyolefin, such as polyethylene, polypropylene or a combination thereof.
- a polyolefin such as polyethylene, polypropylene or a combination thereof.
- the polyolefin is a propylene homopolymer, for instance a propylene homopolymer with a melt flow rate MFR 2 (230°C) in the range of 8 to 18 g/10min.
- the amount of polysiloxane present in such masterbatches is at least 25 wt.-%, more preferably 25 to 60 wt.-%, like 40 to 60 wt.-%, still more preferably 45 to 55 wt.-%, like 50 to 52 wt.-%.
- Some non-limiting examples of such polysiloxane mixtures include DOW CORNING MB50 series Masterbatches such as DOW CORNING MB50-001, MB50-002, MB50-313, MB50-314 and MB50-321, especially MB50-001, all of which are available from Dow Coming Corporation, Midland, MI.
- the antiblocking agent (AB) is a silicon dioxide and/or silicate.
- the antiblocking agent (AB) is a silicon dioxide (SiO 2 ), like a synthetic silicon dioxide.
- the silicon dioxide has pore volume in the range of 0.8 to 1.2 ml/g and/or a particle size of 3.5 to 6.0 ⁇ m.
- slip agent is fatty acid amide derivative, more preferably an unsaturated fatty acid amid derivative. More preferably the unsaturated fatty acid amid is mono-unsaturated, i.e. contains only one ethylene group.
- the polypropylene composition of the present invention can be prepared by any suitable method known in the art, such as by blending the heterophasic propylene copolymer (RAHECO), the plastomer (P), the polysiloxane (PS), and optionally the antiblocking agent (AB) and the slip agent (SA) as well as any optional further additives, either directly, e.g., in an extruder, such that the same extruder is used to make the finished product, or by pre-melt mixing in a separate mixer or extruder.
- a conventional compounding or blending apparatus e.g. a Banbury mixer, a 2- roll rubber mill, Buss-co-kneader or a twin screw extruder may be used.
- heterophasic propylene copolymer Pre-RAHECO
- PS polysiloxane
- SA slip agent
- the present invention is not only directed to the polypropylene composition as such but also to the articles comprising the instant polypropylene composition.
- the article comprises at least 70 wt.-%, like 70 to 99 wt.-% or 70 to 100 wt.-%, preferably at least 80 wt.-%, like 80 to 99 wt.-% or 80 to 100 wt.-%, more preferably at least 95 wt.-%, like 95 to 99 wt.-% or 95 to 100 wt.-%, yet more preferably consists of, the instant polypropylene composition.
- the articles according to this invention are injection molded articles, in particular thin-walled articles, like thin-wall tubes.
- the term "thin-walled” shall preferably express a thickness of not more than 2 mm, more preferably in the range of 0.5 to 2.0 mm, yet more preferably in the range of 0.8 to 1.8, still more preferably in the range of 1.0 to 1.5 mm, still yet more preferably in the range of 1.0 to 1.2 mm.
- MFR PP ⁇ 2 10 log MFR PP - w PP ⁇ 1 x log MFR PP ⁇ 1 w PP ⁇ 2
- Density was measured according to ISO 1183-1 - method A (2004). Sample preparation is done by compression moulding in accordance with ISO 1872-2:2007.
- the comonomer content is determined by quantitative Fourier transform infrared spectroscopy (FTIR) after basic assignment calibrated via quantitative 13 C nuclear magnetic resonance (NMR) spectroscopy in a manner well known in the art. Thin films are pressed to a thickness of 250 ⁇ m and spectra recorded in transmission mode.
- FTIR quantitative Fourier transform infrared spectroscopy
- NMR quantitative 13 C nuclear magnetic resonance
- the ethylene content of a polypropylene-co-ethylene copolymer is determined using the baseline corrected peak area of the quantitative bands found at 720-722 and 730-733 cm -1 .
- Propylene-1-butene-copolymers were evaluated at 767 cm -1 . Quantitative results are obtained based upon reference to the film thickness.
- the MFR 2 (230 °C) was measured according to ISO 1133 (230 °C, 2.16 kg load).
- the MFR 2 (190 °C) was measured according to ISO 1133 (190 °C, 2.16 kg load).
- xylene cold solubles (XCS, wt.-%) was determined at 25 °C according ISO 16152; first edition; 2005-07-01.
- the intrinsic viscosity was measured according to DIN ISO 1628/1, October 1999 (in decalin at 135 °C).
- the flexural modulus was determined in 3-point-bending according to ISO 178 on injection molded specimens of 80 x 10 x 4 mm prepared in accordance with ISO 294-1:1996.
- a minimum of 20 scratches parallel to each other were brought up at a load of 10 N with a distance of 2 mm.
- the application of the scratches was repeated perpendicular to each other, so that the result was a scratching screen.
- the scratching direction should be unidirectional.
- the scratch visibility is reported as the difference of the luminance ⁇ L of the unscratched from the scratched areas.
- ⁇ L values were measured using a spectrophotometer that fulfils the requirements to DIN 5033. Light source for quantification of ⁇ L D65/10°. Measured ⁇ L values must be below a maximum of 1.5.
- the catalyst used in the polymerization process for the heterophasic propylene copoylmer was prepared otherwise according to Example 8 of WO 2004/029112 , except that diethylaluminium chloride was used as an aluminium compound (co-catalyst) instead of triethylaluminium. Dicyclo pentyl dimethoxy silane was used as donor. The aluminium to donor ratio is indicated in table 1.
- the resulting the heterophasic propylene copoylmer (Pre-RAHECO) is mixed with the additional components as indicated in table 2 in a co-rotating twin-screw extruder (type: Coperion ZSK 57).
- Table 1 Heterophasic propylene copoylmer (Pre-RAHECO) Pre-RAHECO Al/donor ratio [mol/mol] 8 Loop MFR 2 [g/10 min] 8.0 C2 content [wt.-%] 2.5 GPR1 MFR 2 [g/10 min] 8.0 C2 content produced in GPR1 [wt.-%] 5.0 C2 content in GPR1 [wt.-%] 4.0 GPR2 XCS [wt.-%] 23 C2 content produced in GPR2 [wt.-%] 30.7 C2 content in GPR2 [wt.-%] 8.0 Final MFR 2 [g/10min] 7.0 C2 content [wt.-%] 8.0 XCS [wt.-%] 20.9 C2 of
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WO2015070360A1 (fr) * | 2013-11-14 | 2015-05-21 | Borouge Compounding Shanghai Co., Ltd. | Composition de polypropylène à résistance aux rayures améliorée et propriétés mécaniques équilibrées |
WO2016091626A1 (fr) * | 2014-12-12 | 2016-06-16 | Wacker Chemie Ag | Mélange maître polymère contenant un polydiméthylsiloxane linéaire, à ultra haut poids moléculaire, sans groupes vinyle |
WO2016095225A1 (fr) * | 2014-12-19 | 2016-06-23 | Abu Dhabi Polymers Co. Ltd (Borouge) L.L.C. | Boîtiers de batterie présentant des performances améliorées en matière de blanchiment sous contrainte |
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CN108641375A (zh) * | 2018-04-29 | 2018-10-12 | 徐菡 | 一种高流动耐磨pp塑料及其制备方法 |
CN111377110A (zh) * | 2020-03-20 | 2020-07-07 | 广东景呈电力设备有限公司 | 一种多功能组合防撞桶及其滚塑制备方法 |
EP3738742A1 (fr) * | 2019-05-16 | 2020-11-18 | Borealis AG | Composition de polypropylène hétérophasique |
EP3458513B1 (fr) | 2016-05-18 | 2021-10-06 | Borealis AG | Copolymères de propylène souple et transparent |
US20220251359A1 (en) * | 2019-02-18 | 2022-08-11 | Sabic Global Technologies B.V. | Composition comprising heterophasic propylene copolymer |
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